Question

What is the gain of the transfer function $G\left(s\right)=\frac{5(s+1)}{(s+3{)}^2}?$

• A. $1$
• B. $0$
• C. $5/3$
• D. $5/9$

Answer 1

The correct option is D $5/9$

$K_P=\underset{s\to 0}{lim}\frac{5(s+1)}{(s+3{)}^2}=\frac{5}{9}$